Microbiology

ABSTRACT Sulfur-oxidizing bacteria are common microorganisms in a variety of sulfide-rich environments. They play important roles in the global sulfur cycle on earth. Here, we present a high-quality draft genome sequence of a sulfur-oxidizing bacterium, “ Candidatus Sulfurovum sediminum” strain AR, which belongs to the class Epsilonproteobacteria and dominated an enrichment culture from a marine sediment collected off Svalbard, within the Arctic Circle. Its genome contains genes for sulfur oxidation and carbon fixation. The size of the draft genome is 2.12 Mb, and the G+C content is 39.4%.

ABSTRACT “ Candidatus Hamiltonella defensa” is a facultative endosymbiont of the whitefly Bemisia tabaci . Herein, we report the first draft genome sequence of “ Candidatus Hamiltonella defensa” from the invasive Mediterranean cryptic species of the B. tabaci complex. The 1.84-Mbp genome sequence comprises 404 contigs and contains 1,806 predicted protein-coding genes.

ABSTRACT We report the genome sequence of actinobacterial strain IMCC13023, isolated from arctic fjord seawater. Phylogenetic analysis of 16S rRNA gene showed that the strain is related to “ Candidatus Aquiluna rubra.” The genome information suggests that strain IMCC13023 is a photoheterotroph carrying actinorhodopsin, with the smallest genome ever reported for a free-living member of the Actinobacteria .